A form of federalism in which national, state, and local governments interact cooperatively and collectively to solve common problems, rather than making separate but similar policies.

plural of cooperative game

A co-operative company established under the European Union law, which may operate throughout the European Economic Area (EEA) without needing to set up a subsidiary in each member state.

plural of European Cooperative Society

Accipiter cooperii, a medium-sized hawk found from Canada to northern Mexico.

plural of Cooper's hawk

plural of wine cooper

A test of physical fitness in the US military, based on how far a person can run in a set period of time.

(dated) a person who samples, bottles and sells wine

(physics) A pair of electrons (or other fermions), of opposite spin, whose theorised behaviour is the basis of the BCS theory of superconductivity.